| 单词 | Thoracica | 
| 释义 | Thoracica [thǝ`ras·ǝ·kǝ]  INVERTEBRATE ZOOLOGY An order of the subclass Cirripedia; individuals are permanently attached in the adult stage, the mantle is usually protected by calcareous plates, and six pairs of biramous thoracic appendages are present.  | 
	
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